常规取心工具在定向井中应用的可行性分析

Feasibility Analysis on Application of Conventional Coring Tools in Directional Well

摘要:

通过对岩心收获率影响因素的分析，认为常规取心工具可以在定向井取心中应用，但是岩心收获率要比直井低，并且随井眼弯曲强度的增大而降低。进一步分析并提出提高定向井取心收获率的方法，为定向井取心工具的研制提供了依据；引用国内外已有的钻井文献证明了以上结论。

Abstract:

Conventional coring tools can be used for directional drilling according to the analysis on the factors that can affect the core recovery. But core recovery is lower than vertical well, and even lower with borehole curvature increasing. The paper puts forward the technology of improving core recovery of directional well by further analysis and provides the basis for development of directional coring tools. Drilling data both at home and abroad proved the conclusion above.